Stable patches for the “Spectre” vulnerabilities are beginning to appear at last. If your computer is only a couple of years old you should check for a BIOS update. They’ll slow down your machine a bit but running unpatched for too long is asking for trouble.
It’s pretty scandalous that these bugs (Spectre and Meltdown) were released in the first place, even more scandalous that they went unreported for years and disastrous that for many people the only way to fix them now is to throw away every device that contains one of the affected processors (pretty much anything that connects to the internet) and buy new ones. I hope the CPU manufacturers are ashamed.